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Finding the Fourth Proportional to 374,686.40, 517,034.88 and 211,333.91

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Solution

The fourth proportional to 374,686.40, 517,034.88 and 211,333.91 is: 291,622.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,686.40 : 517,034.88 = 211,333.91 : x
  2. Step 2: Convert to fraction form
    374,686.40/517,034.88 = 211,333.91/x
  3. Step 3: Cross multiply
    374,686.40x = 517,034.88 × 211,333.91
  4. Step 4: Simplify right side
    374,686.40x = 109,267,002,796.78
  5. Step 5: Solve for x
    x = 109,267,002,796.78/374,686.40
  6. Step 6: Final answer
    x = 291,622.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.